fix publish-signed for readme
fix publish-signed for readme

MasseGuillaume/scalameta,Dveim/scalameta,scalameta/scalameta,olafurpg/scalameta,scalameta/scalameta,scalameta/scalameta,xeno-by/scalameta,DavidDudson/scalameta,olafurpg/scalameta,xeno-by/scalameta,DavidDudson/scalameta,MasseGuillaume/scalameta,MasseGuillaume/scalameta,scalameta/scalameta,olafurpg/scalameta,xeno-by/scalameta,scalameta/scalameta